34CrNi3Mo - JB 7026-2018

Grade	34CrNi3Mo
Corresponding Standard	JB 7026-2018 Rotor Forgings for 50 MW Turbine Generators and Below —Technical Specification
Classification	Alloy Steel

34CrNi3Mo Chemical Element Composition Content (%)

Component	C	Si ^①	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.3	0.17	0.5	-	-	0.7	2.75	-	0.25
Maximum Value	0.4	0.37	0.8	0.02	0.02	1.1	3.25	0.2	0.4

① For steels produced by the vacuum carbon deoxidation process, the silicon content is permitted to be not greater than 0.10 %.

34CrNi3Mo Mechanical Properties

Forging Class，Location of Test Specimens	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Impact Energy Absorption KV2 J
V，Longitudinal at the Shaft End	≥590	≥440	≥17	≥40	≥56
V，Tangential at the Shaft Body	≥590	≥440	≥16	≥35	≥40
V，Radial at the Shaft Body	≥540	≥390	≥15	≥35	≥40
VI，Longitudinal at the Shaft End	≥640	≥490	≥16	≥35	≥56
VI，Tangential at the Shaft Body	≥640	≥490	≥16	≥35	≥40
VI，Radial at the Shaft Body	≥590	≥440	≥14	≥30	≥40

34CrNi3Mo Corresponding Standards(Same grade name, different standards)

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